//
//  Box.h
//  ExceptionTest
//
//  Created by jansh on 16/4/12.
//  Copyright © 2016年 jansh. All rights reserved.
//

#import <Foundation/Foundation.h>

@interface Box : NSObject
{
    NSInteger number;
}
-(void) setNumber: (NSInteger) num;
-(void) pushIn;
-(void) pullOut;
-(void) printNumber;

@end
